SanDisk calls active on renewed takeover chatterSanDisk February 81 and 83 calls are active on total call volume of 1500 contracts (600 puts) on renewed takeover chatter. February call option implied volatility is at 41, March and April is at 29, July is at 31; compared to its 26-week average of 32 according to Track Data. Active call volume suggests traders taking positions for large near term price movement.

Zillow Q4 preannouncement shows revenue momentum, says CanaccordCanaccord said Zillow's (Z) Q4 earnings preannouncement shows that it is gaining revenue momentum. The firm believes the future is bright for the company, which is set to close its purchase of Trulia (TRLA) as soon as today. Canaccord maintained its Buy rating and $125 price target on Zillow shares.